CN203690387U - A rechargeable battery structure suitable for large-capacity safe charging - Google Patents

Abstract

The utility model relates to a rechargeable battery structure that is fit for large capacity safety and charges, including cell, encapsulation cell's casing and electrode cover plate, characterized by at least: the positive and negative electrodes of the unit cell are transitionally connected to the electrode cover plate through an elastic connecting plate. The utility model discloses a structure can quick charge, can prolong battery live time again, reduces the charger cost to be fit for the rechargeable battery that the large capacity charges safely.

Description

A rechargeable battery structure suitable for large-capacity safe charging

technical field

The utility model relates to a rechargeable battery, in particular to a rechargeable battery structure suitable for large-capacity safe charging.

Background technique

Battery charging is generally carried out according to the current size of 0.1C. C means the rated current of the battery. Such as a 10Ah battery, the charging current should be 1A.

Constant current chargers are the most common chargers on the market. Constant current chargers have been used since the era of nickel-cadmium batteries. The constant current charger usually uses a slow charging current, and its use is relatively simple, just put the battery in the battery compartment to charge.

Theoretically, the smaller the charging current is, the better it is for the battery. 0.2C when charging at a low rate specified by the national standard.

With the increasing pressure of people's life and the accelerated pace, the capacity requirements for electric vehicle batteries are getting higher and higher, and the charging speed of the battery needs to be completed in a short time. Therefore, the charger needs to provide a large current to speed up the charging time. . Although high current can speed up the charging time, it will affect the service life of the battery. When the battery is composed of multiple units connected in parallel, a problem with one of the batteries in the parallel connection will affect the overall battery life.

Utility model content

The purpose of the utility model is to provide a rechargeable battery structure suitable for large-capacity safe charging, which can not only charge quickly, but also prolong the service time of the battery and reduce the cost of the charger.

The purpose of this utility model is achieved in this way. A rechargeable battery structure suitable for large-capacity safe charging includes at least a unit battery, a housing for encapsulating the unit battery, and an electrode cover. It is characterized in that: the positive and negative electrodes of the unit battery are elastically The connection plate is transitionally connected to the electrode cover plate.

The positive electrode end of the elastic connecting plate connects the positive terminal output of each unit cell to the positive electrode of the electrode cover plate in parallel, and the negative electrode terminal of the elastic connecting plate connects the negative terminal output of each unit cell to the electrode cover plate in parallel. negative electrode.

The connection between the positive terminal output and the negative terminal output of the unit battery and the elastic connection plate is through the steel ball of the interface board. The steel ball is embedded in the steel ball groove of the interface board. There is a spring in the steel ball groove, and the steel ball notch is smaller than the steel ball diameter D , The steel ball is coated with a metal conductor.

The elastic connecting plate is connected to the electrode cover plate through a spring rod assembly, and the elastic connecting plate has a limit groove, so that the elastic connecting plate moves up and down within the range of movement of the limit groove to maintain the elasticity of the spring rod assembly.

The rechargeable battery structure includes at least one transitional charging board, which is movably connected with the lower end surface of the elastic connecting plate, and movably connected with the conductor steel ball on the upper surface of the interface board, and is used to connect the positive terminal output and the negative terminal output of each unit battery according to the connected in series, the positive and negative electrode interfaces of the transition charging boards connected in series are connected to the charger, and the charger charges all the unit batteries connected in series.

There is a movable cover plate at the upper end of the shell of the packaged unit battery, the movable cover plate has electrode through holes, the movable cover plate is sleeved on the upper end of the shell of the packaged unit battery, and the baffles around the movable cover plate seal between the elastic connecting plate and the interface plate gap.

The utility model has the advantages that the positive and negative electrodes of the unit cells are transitionally connected to the electrode cover plate through the elastic connecting plate. Including a transition charging board, the transition charging board is movably connected with the lower end surface of the elastic connecting plate, and is movably connected with the conductor steel ball on the upper surface of the interface board, which is used to connect the positive terminal output and negative terminal output of each unit battery in series, and connect them in series The positive and negative electrode interfaces of the final transition charging board are connected to the charger, and the charger charges all the unit batteries connected in series. In this way, when the battery is in use, it works in a state of low voltage and high current. When charging, the battery is connected in series through the transition charging board into a single battery structure charged by a small current, which can not only charge quickly, but also prolong the service time of the battery and reduce the cost of the charger.

Description of drawings

Below in conjunction with embodiment accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a structural schematic diagram of an elastic connecting plate;

Fig. 3 is a schematic diagram of the structure of the interface board;

Fig. 4 is the bit map distribution of the steel balls on the interface board 11.

Fig. 5 is a schematic diagram of the connection between the elastic connecting plate and the electrode cover plate through the spring rod assembly;

Fig. 6 is a schematic structural diagram of a transitional charging board;

Fig. 7 is a schematic diagram of the structure of the movable cover.

In the figure, 1. Unit battery; 2. Housing; 3. Electrode cover plate; 4. Elastic connecting plate; 5. Positive electrode terminal; 6. Negative electrode terminal; 7. Positive terminal output; 8. Positive electrode; 9. Terminal output; 10, negative electrode; 11, interface board; 12, steel ball; 13, steel ball groove; 14, spring steel ball; 15, notch; 16, spring rod assembly; 17, limit groove; 18, transition charging board; 19. Positive and negative electrode interface; 20. Movable cover plate; 21. Electrode via hole; 22. Gap.

Detailed ways

As shown in Figure 1, a rechargeable battery structure suitable for large-capacity safe charging includes at least a unit battery 1, a casing 2 encapsulating the unit battery, and an electrode cover 3. It is characterized in that the positive and negative electrodes of the unit battery 1 are elastically The connection plate 4 is transitionally connected to the electrode cover plate 3 .

As shown in Figure 2 and Figure 7, the positive electrode terminal 5 of the elastic connecting plate 4 connects the positive terminal output 7 of each unit cell 1 to the positive electrode 8 of the electrode cover plate 3 in parallel, and the negative electrode terminal 6 of the elastic connecting plate 4 connects each The negative terminal output 9 of each unit cell 1 is connected in parallel to the negative electrode 10 of the electrode cover plate 3 .

As shown in Figure 3, the positive terminal output 7 and the negative terminal output 9 of the unit battery are connected to the elastic connecting plate 4 through the steel ball 12 of the interface board 11. The steel ball 12 is embedded in the steel ball groove 13 of the interface board 11, and the steel ball groove Spring 14 is arranged in 13, and steel ball notch 15 is less than steel ball diameter D, and steel ball is plated with metal conductor.

As shown in Figure 4, the steel ball positions on the interface board 11 are correspondingly connected to the positive terminal output 7 and the negative terminal output 9 of a unit battery 1, and there are as many pairs of steel ball positions as there are unit batteries 1. Eight unit batteries are given in the embodiment, and the eight unit batteries 1 have 16 steel ball positions.

The steel ball 12 of the interface plate 11 is connected with the elastic connecting plate 4, one is easy to connect, and the other is that long-term use can ensure reliable operation of each charge. The bottom of the interface board 11 is conductively connected with the spring, and at the same time, each steel ball position is welded with the positive terminal output 7 or the negative terminal output 9 of the unit cell for conductive connection.

As shown in Figure 5, the elastic connecting plate 4 and the electrode cover plate 3 are connected by a spring rod assembly 16, and the elastic connecting plate 4 has a limiting groove 17, so that the elastic connecting plate 4 moves up and down within the range of movement of the limiting groove 17, Keep the spring bar assembly 16 elastic.

As shown in FIG. 6 , at least one transitional charging plate 18 is included, and the transitional charging plate 18 is movably connected with the lower end surface of the elastic connecting plate 4 , and is movably connected with the conductor steel ball 12 on the upper end surface of the interface plate 11 , and is used to connect each unit battery 1 The positive terminal output 7 and the negative terminal output 9 are connected in series, and the positive and negative electrode interfaces 19 of the transitional charging board 18 connected in series are connected to the charger, and the charger charges all the unit batteries connected in series.

As shown in Figure 7, there is a movable cover plate 20 at the upper end of the casing 2 of the packaged unit battery 1, the movable cover plate 20 has electrode through holes 21, the movable cover plate 20 is socketed on the upper end of the casing 2 of the packaged unit battery, the movable cover The baffles around the plate 20 seal the gap 22 between the elastic connecting plate 4 and the interface plate 11 .

The components and structures not described in detail in this embodiment are known components and common structures or common means in this industry, and will not be described here one by one.

Claims (6)

1. A rechargeable battery structure suitable for large-capacity safe charging, comprising at least a unit battery, a housing for encapsulating the unit battery, and an electrode cover, characterized in that: the positive and negative electrodes of the unit battery are transitionally connected to the electrode cover through an elastic connecting plate . 2. A rechargeable battery structure suitable for large-capacity safe charging according to claim 1, characterized in that: the positive electrode terminal of the elastic connecting plate connects the positive terminal output of each unit battery to the electrode cover plate in parallel The positive electrode of the elastic connecting plate connects the negative terminal output of each unit cell to the negative electrode of the electrode cover plate in parallel. 3. A rechargeable battery structure suitable for large-capacity safe charging according to claim 1, characterized in that: the positive terminal output and negative terminal output of the unit battery are connected to the elastic connecting plate through the movement of steel balls on the interface plate Connection, the steel ball is embedded in the steel ball groove of the interface board, there is a spring in the steel ball groove, the steel ball notch is smaller than the diameter D of the steel ball, and the steel ball is plated with a metal conductor. 4. A rechargeable battery structure suitable for large-capacity safe charging according to claim 1, characterized in that: the elastic connecting plate and the electrode cover are connected by a spring rod assembly, and the elastic connecting plate has a limit slot , so that the elastic connecting plate moves up and down within the movable range of the limit slot, so as to maintain the elasticity of the spring rod assembly. 5. A rechargeable battery structure suitable for large-capacity safe charging according to claim 1, characterized in that it includes at least one transitional charging board, the transitional charging board is movably connected with the lower end surface of the elastic connecting plate, and connected with the upper surface of the interface board. The conductor steel ball is connected freely, and is used to connect the positive terminal output and the negative terminal output of each unit battery in series. After the series connection, the positive and negative electrode interfaces of the transition charging board are connected to the charger. Charge. 6. A rechargeable battery structure suitable for large-capacity safe charging according to claim 1, characterized in that: there is a movable cover at the upper end of the casing of the packaged unit battery, the movable cover has electrode through holes, and the movable cover covers It is connected to the upper end of the casing of the packaged unit battery, and the baffle plates around the movable cover plate seal the gap between the elastic connecting plate and the interface plate.

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